Have you checked the article in the download package?
How can I integrate CuteChat with my existing login system?
To help you quickly use the CuteChat in your ASP.NET applications, CuteSoft team has finished the providers for Cute Chat standalone, DotNetNuke 2.X, DotNetNuke 3.X, IbuySpy and Community Starter Kit.
Integrating with existing user login system
If your portal is not based on the above projects. You need to create a custom Provider to integrate CuteChat with existing user login system. To implement a custom CuteChat Provider, you will need to provide a concrete implementation of the CuteSoft.Chat.DataProvider class, CuteSoft.Chat.UserAdapter class and CuteSoft.Chat.ConnectionStringProvider class (optional) , and plug it into the system.
asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx